Group B Approval Process

New or expanding Group B Public Water Systems are required to get approval prior to construction. The approval for all Group B systems are done by the Cowlitz County Health Department, while Group A systems require approval from the Washington State Department of Health.

Cowlitz County Health Department reviews systems with 9 or less connections consisting of a drilled well that:

Do not use a variable speed pump;

Do not provide fire flow;

Do not have special hydraulic considerations;

Do not have atmospheric storage in which the bottom elevation of the storage reservoir is below the ground surface;

Serve fewer than ten service connections

The Washington State Department of Health reviews any system that does not meet the above requirements. A professional engineer is required to submit any design submittals for these types of systems.